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Welcome to RegExLib.com, the Internet's first Regular Expression Library. Currently we
have indexed 24027 expressions from
2888 contributors around the world.
We hope you'll find this site useful and come back whenever you
need help writing an expression,
you're looking for an expression for a particular task, or are ready to
contribute new expressions you’ve just figured out. Thanks!

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Regex Resources

Sams Teach Yourself Regular Expressions in 10 Minutes

Mastering Regular Expressions

RegEx is supported in all major development environments (for use in editing and working with code) and will thus appeal to anyone using these tools. In addition, every JavaScript developer should be using RegEx, but most don't as it has never been taught to them properly before. Developers using ASP, C#, ColdFusion, Java JSP, PHP, Perl, Python, and more can (and should) be using RegEx, and so every one of them is a potential reader too.